# CVE-2026-57966: Spice-vdagent: path traversal in file transfer via unsanitized filename

Status: published. Published: 2026-06-29. Updated: 2026-11-05.

A path traversal vulnerability was found in spice-vdagent. This flaw allows a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system. This occurs because the filename provided by the SPICE host during file transfers is not properly sanitized before being used. An attacker could exploit this to write to sensitive locations with the privileges of the spice-vdagent process, typically the logged-in user. This issue requires the SPICE host to be untrusted or compromised for exploitation.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Red Hat / Red Hat Enterprise Linux 10 (spice-vdagent): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (spice-vdagent): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (spice-vdagent): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (mingw-spice-vdagent): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (spice-vdagent): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (spice-vdagent): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 4.4 (medium); CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.13% as of 2026-11-05; percentile 2.33%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-22

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2026-57966 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2493582 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-57966; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-57966; retrieved 2026-11-05; source updated Not reported

Revision: fbb32d127f21f4113e897299aab466a5af9fbe89b7a2725226428201bf7e6729

Canonical: https://y2.dev/cve/CVE-2026-57966

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